A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes disk, valve, graphite impregnated and lubricated items.
Classification: Gaskets, washers and other seals, of vulcanized rubber other than hard rubber
NSN 4140-00-149-9800
NSN 6320-00-456-2092
NSN 4140-01-648-2249
NSN 6240-00-837-3318
NSN 6240-01-215-8485
NSN 6220-01-309-5827
NSN 5855-00-862-3345
NSN 5960-01-573-6483
NSN 6220-01-580-1499
NSN 5855-01-069-4742
NSN 6685-00-070-0738
NSN 6130-00-132-3267